Flexible conduit for sifting-machines, &amp;c.



J. A. MGPHAYDEN. FLEXIBLE GONDUIT FOR SIFTING MACHINES,

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ATTEIRNEYEI liillilfiiiillidii PATENT @FFIQE.

JOHN A. IVIOPHAYDEN, OF SILVER CHEER, NE'W' YORK. ASSIGNO OLE ONE-HALF TO THE S. HOWES (30., INC, OF SILVER CREEK, NEW YORK, A (HER:

YORK.

RATION OF NEW FLEXIBLE CONDUIT FOR SIFTING-MACHINES, 8w.

Application filed July 28 1918.

To (JZZ whom it may concern lie it known that l. Joim A. Mcllnnynnn, a ciiizen of the United States, residing at Silver Creek, in the county of Chautauqua .3 and. fzltate of New Yorlghave invented new and. useful improvements in Flexible Conduits for Sitting-Machines, &c., of which the following is a specification.

This invention relates to a flexible conduit which is more particularly designed for use in conducting flour or other granular material from a stationary source of supply to a horizontally rotating or gyratmg sifting box and to conduct the separated material from the sifting box to a stationary place intended to receive the same. This flexible conduit is, however, capable of use in other places and kinds of machines in which similar conditions exist.

Heretofore it has been customary to employ pliable woven or textile tubes For con' ducting the material to and d1scharging the same from the movable sifting box but these are objectionable for the reason that they wear; out very rapidly and require frequent renewal. thereby involving not only con; sidcrableexpense for maintenance but also necessitating stopping of the machine an objectionable length of time for making repairs of these tubes.

It is the object of this invention to provide simple, cilicient and inexpensive means for protecting the inner side of these flexible tubes so as to greutl prolong the life of the same and not only-necessitate less frequent repair and avoid undue stoppage of the machine, but also reducing the lia bility of leakage of dust through. the tubes.

iii the accompanying drawings: Figure l is a vertical section. of a sitting machine provided with my improved conduits. Fig. Q is a vertical. longitudinal section, on an enlarged scale of one or these conduits. Fig. 3 is a horizontal section of the same taken in line 33, Fig. 2.

Similar characters ott reference indicate corresponding parts throughout the several views-3.,

The sifting machine which is shown in the drawings as an example of one of the various applications of my invention comprises a horizontally rotating or gyrating box or chamber 1 which contains a plurality of horizontal sieves or screens 2, a plurality of inlet openings or passages 3 at its top or Specification of Letters Patent.

Patented June 30, 1914.

Serial No. 781,458.

upper end through which the material to be sifted is introduced into the sifting box, and a plurality of outlet openings or passages l in the bottom or lower end thereof thr iiugh which the separated material is discharged from the sifting box.

Various means may be provided for horizontally rotating. or gyrating the sifting box and while thus operated the latter may be movably supported in'various ways for instance by means of a plurality of upright hangers 5 which. are connected at their upper ones to overhead beams O or similar supper while their lower ends are connected with ,rods 7 mounted on the sides of the sifting "box. 8 represents a stationary platform ar ranged horizontally above the sifting box and suspended by means of fixed hangers 9 from the overhead beams and provided with a plurality of delivery openings 10 to which the flour or other material to be sifted is delivered by means of spouts 11 from any suitable source of supply. Below the sifting machine is arranged tlfe stationary floor 12 which is provided with a plurality of receiving openings 13 through which the material passes which is discharged from the lower end of the sifting box and delivered to any duit which embodies my invention andwhich is constructed as follows: 1 represents an outer tube of pliable or flexible ma- This terial such as woven or textile fabric. outer tube may be secured at its opposite ends to the sitting box and to the stationary member containing the respective openings which are to be connected in any suitable manner but preferably by means of externally grooved collars 15, 16 secured respectively to the sifting machine and the stationary member 8 or 12 around the openings of these members, and tie or retaining bands 21 whereby the end portions of the-outer tube are securely fastened to the outer sides of the companion collars 15, 16. In order to protect the inner side of each of these outer tubes from the wearing efl'ect ot the flour or other granular material which is constantly flowing through the same a protecing passages of the floor by a flexible coni'llp 'gethcr so that the outer tube-is drawn into tivelining is provided for each of these tubes which preferably comprises a plurality of short tubular sections each of which is connected by. a telescopic joint with an adjacent section. These sections may be constructed of any suitable material but sheet metal such as tin is preferred on account of its low cost tion [8 which is preferablyof downwardly, -=tapering conical form. In the assembled and durability. Each of these lining sections is constructed to form an upper enlarged portion 17 which is preferably of cylindrical form and a lower narrow p'orcondition of the several lining sections the lower narrow end of one section pro]ects downwardly into the large upper end of meansrclieved from wear and the inner lining sections are capable of resisting wear,

the life of the conduit is greatly extended so that less frequent renewals of the same and fewer stoppages of the machineare necessary and the cost of maintenance is also very materially reduced.

Each of the lining sect1ons may be secured to the inner-side of the outer flexible tube in various ways so as to hold the same in spaced relation to adjacent. lining sections and also permit the several lining sections to articulate so that-one'end of the flexible conduit is free to move laterally relatlve to theother end as the sifting box gyrales or rotates with reference to the fixed member v with which it is connected by the flexible connecting each lining SCUUOIL with the conduit. The preferred means f()l.'tl1\1$ companion flexible outer tube which are "shown in the drawings comprise an annular "inwardly projecting beadl!) 'l orumd on the 'liningj--section at the junction between its up'per'large and lower small part, and a retaining ring or band 20 which is preferably,

constructed of a piece of wire and which'engages with the outer side of the pliable outer tube and has its ends twist ed or fastened toth'efibcad and held in placethercii f By this means the i'i'fn'er side of the outer tube is ='-'eli'ectivelyprotected against wear and a each protective section "with the flexible conduit is provided which connects the movable sifting box with a passage'in av relatively stationary member and is free to follow the movements of the sifting b0 i without liability of wearing I claim as my invention:

unduly. i

1. A flexible conduit comprising afpliable outer tube, and a protective lining arranged within said tube and composed of a plurality of tubular sections each of which is connected by a telescopic joint with an adjacent section and also connected with said pliable outer tubeso as'to be held out of contact with adjacent tubular sections.

2. A flexible conduit comprising a pliable.

outer tube,- a protective lining arranged within said tube'and composed of a plurality of tubular sections each of which is connected by a telescopic joint with an adjacent section and means for connecting adj a'cent part of said outer tube.

31 A flexible condult comprising a pliable outer tube. a protective lining arranged within said tube and composed ofa lurality of tubular sections each of whic is connected by a telescopic joint with an adjacent section and means for connecting each protective section with the adjacent part of said outer tube, comprising an in wardly projecting annular bead formed on each protective section and adapted to receive the adjacent part of said outer tube, and a retaining ring engaging with the outer side of said tube and holding the same in said bead.

4. A flexible conduit comprising a pliable outer tube, a protective lining arrangedwithin said tubeand composed of a plurality of tubular sectionseach of which is 1 connected bya telescopic joint with an ad- .gacent section, each of said sections being of large cylindrical form at one end and of.

small tapering form at its other end, and thesniall end of one'section projecting into the large end of another section and the large end of each section being connected with said outer tube.

-Witness my band this 14: day ofilnly 1913.

JOHN A. lrloII'lAYDEN'.

' Witnesses: v r

' A. C. Bmuman, M. L. BAnnnAU. 

